Signaling board updates fast

SHORELINE, WASH.  A 88.9 x 101.6-mm direct digital synthesizer board, the Model DDS7m from Novatech Instruments Inc., features simultaneous sine and ACMOS/TTL outputs at up to 68 MHz, handling frequency and phase updates in less than 400 nanoseconds. The signal generator board has an external clock input and master clock output, allowing phase-synchronous operation of up to 10 of the boards in a multiple-phase system. Its internal clock is accurate to 10 ppm.